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Air quality

J Child Psychol Psychiatry 42(8):10211028
The Purple Air system has a drawback in that the density of the particles has to be estimated and wood smoke particles are a little less dense than average particle pollution

This is, by no means, a scientific observation

According to data from January 2020, of the 2,022 hospitalized EVALI patients, about 82% had vaped THC, while 14% had vaped nicotine products exclusively

Chest pain at rest that lasts for more than 15 minutes is a medical emergency that may be due to a heart attack, and patients should call an emergency ambulance
