Help & Guidance — Purple Haze MK
Why Does Vaping Make Me Cough?
Coughing when vaping is very common — particularly for new vapers and people who have just switched from smoking. In most cases it comes down to inhalation technique, PG sensitivity, nicotine strength or your airways adjusting. All of these are fixable with small changes to how you vape or what you vape.
Research published in the journal Tobacco Control found that around 57% of new vapers cough when they first start vaping. For most people this resolves within a few weeks as the body adapts and as they learn the correct inhalation technique for their device. The most common immediate causes of coughing while vaping are: using a direct-to-lung (DTL) inhale technique on a device designed for mouth-to-lung (MTL) use — the most frequent mistake; high propylene glycol (PG) content irritating sensitive airways; nicotine strength too high causing throat irritation; and for recent ex-smokers, airways clearing from years of cigarette damage. Each cause has a clear fix that does not require a new device.
The Main Causes of Coughing When Vaping
Wrong inhalation technique — DTL on an MTL device
The single most common cause of coughing when vaping is using a direct-to-lung (DTL) inhale — breathing vapour straight into the lungs in one motion — on a device designed for mouth-to-lung (MTL) use. MTL devices produce a tighter, cooler, more concentrated vapour stream. When this hits the back of the throat and lungs directly without the MTL buffer stage, the cough reflex triggers instantly. Most pod kits, pen vapes and starter kits are MTL devices.
Fix: Draw vapour into your mouth first — hold it for one to two seconds — then inhale gently to the lungs. This is the MTL technique and matches how smoking a cigarette works. If you have been doing DTL, switching to MTL technique typically stops the cough immediately.High PG content irritating the airway
Propylene glycol (PG) — one of the two main e-liquid base ingredients — creates the throat hit sensation in vaping. High-PG liquids (50/50 or PG-dominant) produce more throat hit and more airway irritation than high-VG liquids. For vapers with sensitive airways, or those who have developed a mild PG sensitivity, high-PG liquids cause persistent coughing regardless of technique. This is particularly noticeable with older 50/50 freebase nicotine liquids.
Fix: Switch to a higher-VG liquid or a nic salt e-liquid. Nicotine salts use benzoic acid to smooth the throat hit significantly, reducing coughing at the same nicotine strength. If you are using 50/50 freebase liquid and coughing consistently, try a nic salt version of the same flavour.Nicotine strength too high
High nicotine concentrations — particularly 20mg freebase (as opposed to nic salt) — create a harsh, scratchy throat hit that triggers coughing in many vapers. Freebase nicotine at 20mg produces a much harsher hit than nicotine salt at the same strength because of the difference in pH. New vapers who start on 20mg freebase liquid are particularly likely to experience persistent cough from nicotine harshness alone.
Fix: Switch from 20mg freebase to 20mg nicotine salt — same nicotine level, dramatically smoother delivery. Alternatively reduce the nicotine strength to 10mg. Nic salts are inherently smoother due to their lower pH and are the right format for almost all MTL pod kit users.New vaper — airways adjusting
For people who have recently quit smoking, the airways are in the process of significant healing. Cilia — tiny hair-like structures in the airways that were paralysed by cigarette smoke — begin to recover within days of quitting and start clearing mucus and debris. This process produces coughing that is often mistakenly attributed to vaping but is actually the body healing. This type of cough typically peaks in the first one to four weeks after switching and then reduces significantly.
Fix: Be patient — this cough is a sign of healing, not harm. Stay hydrated, use your vape at a pace that feels comfortable rather than heavily, and the cough should reduce naturally within a few weeks. If it worsens or is accompanied by pain or blood, speak to a GP.Vapour temperature too hot
High-wattage sub-ohm devices produce warmer vapour that can irritate airways and trigger coughing, particularly for vapers accustomed to cooler MTL devices or cigarettes. Wattage above the coil's rated range also makes vapour hotter than intended. Very hot vapour dries the throat rapidly and stimulates the cough reflex.
Fix: Reduce the wattage setting to the lower end of your coil's rated range. If your device has adjustable airflow, open it slightly — more airflow cools the vapour. Take slower, more gentle draws to reduce draw-activated power output.Draws too long or too hard
Aggressive, hard, long draws produce a dense concentrated vapour volume that overwhelms the airway. This is particularly problematic with sub-ohm devices that produce large clouds — a single very long draw at high wattage delivers a volume of vapour that the respiratory system struggles to handle smoothly.
Fix: Take shorter, gentler draws of 2 to 3 seconds rather than long 5 to 7 second pulls. This reduces the vapour volume per draw and allows the airway to process it comfortably without triggering the cough reflex.MTL vs DTL: Using the Right Technique for Your Device
Mouth-to-Lung (MTL) — correct for most pod kits
- Draw vapour into the mouth first — like sipping through a straw
- Hold in mouth for one to two seconds
- Then inhale gently to the lungs
- Exhale slowly and smoothly
- This mirrors the technique of smoking a cigarette exactly
- Correct for: all pod kits, pen vapes, starter kits, high-resistance coils
Direct-to-Lung (DTL) — for sub-ohm devices only
- Draw vapour directly into the lungs in one continuous motion
- No mouth-hold stage
- Wider, more open draw required
- Used with wide-open airflow sub-ohm devices
- Correct for: box mods, sub-ohm tanks, high-power pod mods
- Using DTL technique on an MTL device is the most common coughing mistake
Research in Tobacco Control found 57% of people cough when they first start vaping — in the majority of cases it resolves within weeks as technique improves and airways adjust
Using a direct-to-lung inhale on an MTL pod kit is the most common cause of vaping cough — switching to the correct mouth-to-lung technique typically stops the cough immediately
Nicotine salt e-liquid produces a significantly smoother throat hit than freebase nicotine at the same mg strength — a key change for vapers who cough from nicotine harshness
When to Seek Medical Advice About Vaping Cough
Most vaping cough is benign and resolves with the fixes above. However, seek GP advice if:
- The cough is accompanied by pain in the chest or throat.
- You are coughing up blood or discoloured mucus.
- The cough has persisted for more than four weeks without improvement despite trying the fixes above.
- You are experiencing breathlessness or wheezing that was not present before you started vaping.
- The cough is significantly worse than any cough you had while smoking.
For most people, coughing when vaping is a short-term adjustment issue rather than a sign of harm. The most effective single change is correcting inhalation technique — a significant proportion of vapers who cough are simply using the wrong technique for their device. After technique, switching from freebase 20mg to nic salt 20mg is the next most impactful change. Together these two adjustments resolve the cough in the majority of cases without any change of device or significant cost. Visit Purple Haze MK at Stall 109, Milton Keynes Market for hands-on advice on technique and the right liquid for your setup.
Part of Our Guide
Help & Guidance Centre
This article is part of the Purple Haze MK Help and Guidance Centre. For more vaping guidance, visit the Purple Haze MK Help and Guidance Centre.
Frequently Asked Questions
Is it normal to cough when I first start vaping?
Yes — coughing when first starting to vape is very common and expected. Research found that more than half of new vapers experience some coughing initially. For recent ex-smokers, some of this cough is the airways healing from cigarette damage rather than a reaction to vapour. Most new vapers find the cough reduces significantly or disappears entirely within two to four weeks as the body adapts and technique improves. If the cough is severe or worsening, see a GP.
Does vaping damage the lungs and cause coughing?
Vaping is not risk-free, but current evidence indicates it is substantially less harmful than smoking. For smokers switching to vaping, short-term coughing during the adjustment period is well documented and does not indicate lung damage in the same way continued smoking would. Long-term lung effects of vaping are an active area of research. If you have persistent cough that does not improve with the fixes above, speak to your GP for assessment.
Why do I cough more with some flavours than others?
Different e-liquid flavours use different flavouring compounds that can vary in their throat and airway irritation potential. Certain citrus and menthol compounds are more likely to trigger airway irritation in sensitive individuals. Heavily sweetened liquids can also cause throat irritation over extended sessions. If a specific flavour consistently causes more coughing than others, try a simpler flavour profile with fewer flavouring compounds — unflavoured or lightly flavoured tobacco or menthol liquids are generally the least irritating.
Related Articles
For more vaping guidance, visit the Purple Haze MK Help and Guidance Centre.
Expert Vaping Advice in Milton Keynes
Purple Haze MK — Find the Right Setup for You
If vaping is making you cough, visit us at Stall 109, Milton Keynes Market. We can identify the cause and help you find the right liquid and technique combination to vape comfortably.