Smokers are free from liquid leakage and can change to a different flavor, as the capsule resembles a cartridge, the firm explained
The problem in trying to compute a risk continuum, and then communicating this, is that there are hundreds of different measures that could be considered, derived from laboratory studies, clinical studies of short-term health impacts, through to long-term epidemiological studies
But, especially for people who are generally healthy, its hard to say what the cut-off is for air quality that you can, say, run in without having to worry about toxic particles lodging in your lungs
Wildfires are more common in dry, hot areas with plenty of fuel, which includes the western and southern U.S