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flag Aged vape aerosols indoors produce harmful particles with metals and free radicals, especially when exposed to ozone and lung fluid, potentially worsening respiratory conditions like asthma and COPD.

flag A new study finds that aged vape aerosols left indoors can produce harmful ultrafine particles containing metals and reactive radicals, especially when exposed to ozone and lung fluid. flag These particles, which form over time, generate 100 times more free radicals per unit weight than larger particles and may damage lung tissue, posing greater risks to those with asthma or COPD. flag Though conducted in a lab with simplified e-liquids, the findings suggest secondhand vape exposure—particularly prolonged—could harm respiratory health, prompting calls for more real-world research and public awareness.

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