Basic and Clinical Sciences (BCSE) Practice Exam

Question: 1 / 400

What happens to "third-hand smoke" over time?

It becomes less toxic

It dissipates completely

It ages and becomes more toxic

Third-hand smoke refers to the residual nicotine and other chemicals left on surfaces after tobacco has been smoked. Over time, this residue interacts with indoor air constituents and other materials in the environment, which can lead to chemical reactions that produce more harmful compounds. Consequently, as third-hand smoke "ages," it can become increasingly toxic due to these transformations into more hazardous substances. This process underscores the importance of recognizing that the dangers associated with smoking extend beyond the immediate act of smoking itself, affecting both indoor environments and health risks over time.

Understanding this helps clarify why simply cleaning surfaces or airing out spaces may not be sufficient to eliminate the long-term risks posed by residual smoke.

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It is neutralized by cleaning agents

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