MDMAs half-life is about 8 hours
The criteria used for a case definition of EVALI (See Table 1) include 1) use of an e-cigarette or related product within 90 days, 2) lung opacities on chest imaging, 3) exclusion of lung infection including viral polymerase chain reaction, basic urine antigen tests for Legionella and Streptococcus pneumoniae , blood cultures, and sputum culture, and 4) absence of a likely alternative diagnosis such as cardiac or neoplastic conditions [34]
It reaches places surface cleaning can't touch - inside wall cavities, deep in carpet padding, throughout HVAC ductwork
Vincent van Gogh was said to have sat there, smoking quietly
Because these devices detect particles by light scattering, dense vapour clouds can interfere with the light beam similarly to smoke, especially if you exhale directly toward the detector or vape in a confined space with poor ventilation