I do find it a sign of their ignorance when even those people that accept that tobacco smoke is harmful, don't put 1+1 together and accept that all smoke inhalation is harmful.
Go figure!
Inhaling woodsmoke is more harmful than tobacco smoke.
Lung Cancer Pathogenesis Associated with Wood Smoke Exposure (Delgado et al., 2005).
https://doi.org/10.1378/chest.128.1.124
Use of wood stoves and risk of cancers of the upper aero-digestive tract: a case-control study. International Journal of Epidemiology https://doi.org/10.1093/ije/27.6.936