Low-priced stock that sells at less than $1.00 per share. Often highly-speculative and volatile, such as start-up mining companies. While, in general, penny stock are considered high-risk securities, some penny stock mature into less-speculative investments. All penny stock are traded over-the-counter.
In its natural form, cork is also a very good fire retardant, although cork dust is actually extremely flammable (because here the cell structure has been broken down). Impermeable: Cork has a magic chemical in its cell membrane that makes it completely impermeable to liquids and gases.
It is very likely that played a part . Chemical solvents such as acetone, alcohol (various alcohols, not just ethyl alcohol), toluene, xylene, turpentine, and benzene, are highly toxic and linked to lymphoma. Bob ross probably used a mixture of turpentine and something else as a paint thinner . He used to paint A LOT so given the fact that turpentine is carcenogenic inhaling its fumes will increase the odds of developing not only lung cancer , but also lymphoma and leukemia .