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It's definitely one of the most bizarre cross-promotions in TV history

Even if filters were made from biodegradable materials, they still contain toxic chemicals when used with tobacco

PMID 27474819

So we have our flakes right here, and we're now going to prepare it like we would any flake-cut pipe tobacco

Urine: 3-7 days Saliva: 24-72 hours Blood: Up to 24 hours Hair: Up to 90 days

USA 91, 20462050 (1994)