One recent study cited in the article found that [e-cigarette] aerosol constituents could injure the respiratory system or worsen preexisting lung disease through a variety of mechanisms. It also points to research associating wheezing, a symptom of potential respiratory disease, with e-cigarette use
10.1021/acs.chemrestox.0c00266
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The most harmful ingredients in cigarette ash include lead, nickel, titanium and zinc, which are released rapidly into soil and water in strong concentrations
MERV ratings range from 1 to 20, with higher numbers indicating better filtration of airborne particles
We aimed to assess the epidemiological features, natural course, and complications as well as compare them between smokers, alcoholics, and without tobacco or alcohol users