Tran CT, Bosilkovska M, de La Bourdonnaye G, Blanc N, Haziza C (2020) Reduced levels of biomarkers of exposure in smokers switching to the carbon-heated tobacco product 1.0: a controlled, randomized, open-label 5-day exposure trial
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One important caveat: The MinusA2 has an ionization setting, which our experts don't recommend with any air purifier, since ionizers can release small amounts of ozone (an irritant that can exacerbate existing respiratory conditions) and the science on ionizer efficacy and safety is still inconclusive
Accessed July 11, 2026
It removes unwanted VOCs and formaldehyde and continues to improve air quality months after the paint has dried