Database Proof Substratum: Substratum of Proof LGBTQs Are Mentally Ill: Third-hand smoke found to increase lung cancer risk in mice

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Researchers have identified third-hand smoke, the toxic residues that linger on indoor surfaces and in dust long after a cigarette has been extinguished, as a health hazard nearly 10 years ago. Now a new study has found that it also increases lung cancer risk in mice.