This COVID mask has a normally-closed rubber bivalve that accepts cigarettes.
Smoke 'em if you got em. Don't burn your coffee filter in the process.-- RayfordSteele, May 22 2020 Bun for such a mask that contains the entire cigarette and recirculates much of the resultant smoke and smell so as not to pollute the indoor airspace of others. [+]-- whatrock, May 22 2020 ^ Chewing to the nth degree. >> Nicotine dosed tea via mask's straw valve?-- wjt, May 23 2020 random, halfbakery