Vape nicotine levels are usually displayed either as a percentage (for example, 5%) or as a concentration by volume, such as 20 mg/ml
For example, a study of Canadian researchers shows that when comparing smoking joint vs cigarette, cannabis gives 20 times more ammonia than tobacco, and up to 5 times more prussic acid, nitrogen oxide, and various aromatic amines
Smoking next to the bathroom window with the exhaust fan on and the shower running to create steam can also help mask the scent, though you may also have to actually take a shower to pull off the ruse
Medications and stimulants that affect urine output or saliva production can further increase the risk
The tobacco-bar is part of the French tradition," said Christophe Mgo, owner of Le Marigny bar in northwest Paris
Environ Sci Pollut Res 26:20132021 Moriwaki H, Kitajima S, Katahira K (2009) Waste on the roadside, poi-sutewaste: its distribution and elution potential of pollutants into environment