I am not saying you can't buy things of spiritual value, I was taught if you buy something it needs to rest for 4 or more days before using it
The idea is to make a streak-free window abrasive, and cigar ash in water works well for that
They may also be used to remove cooking and pet odors
Maisonneuve P, Lowenfels AB, Mullhaupt B, Cavallini G, Lankisch PG, Andersen JR, et al
Higher volumes of these volatile compounds are made by more powerful electronic cigarettes, such as those designed for sub-ohm vaping, but a 2015 study found that and that no formaldehyde was detected on low voltage E-Cigarettes (less than 3.3V), indicating that low powered vapes are likely to be safer than high powered devices (2)