[cobblestone32]

Here's a citation about filters.

> The overwhelming majority of independent research shows that filters do not reduce the harms associated with smoking - a fact understood by tobacco industry scientists in the 1960s. In fact, filters may increase the harms caused by smoking by enabling smokers to inhale smoke more deeply into their lungs.

Also, plain common sense will tell you that inhaling toxic smoke through a small piece of paper is not much healthier than inhaling toxic smoke directly.

[1] https://pmc.ncbi.nlm.nih.gov/articles/PMC9340047/