black spots in cigarette filter Brother sent me this photo, What type of mushies would be growing on the filters of cigs? 🤢🍄 : r/mycology WTF is this black stuff

WTF is this black stuff in my cigarette filters? : r Whatisthis What Causes Black Specks in Your Water and How to Fix Them Marlboro Filter Black ClinMed International Library Electron Microscopic Analysis of Silicate and Calcium Particles in Cigarette Smoke Tar International Journal of Respiratory and Pulmonary Medicine TIL that cigarette filters change color not because they are trapping part of the cigarette smoke, but because they are designed to change color to lead consumers to think that they are Why do these cigarettes have a perforation on the filter? : r whatisthisthing

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