It mars a man, it mars a purse, A lean one fat, a fat one worse
For those lucky folks who live in the best-case-scenario buildings those with newer central air conditioning systems, with the option of upgrading their filters and closing their intake ducts additional air filtration devices might not be necessary
Int Arch Occup Environ Health 70:7784 Apostolou A, Garcia-Esquinas E, Fadrowski JJ, McLain P, Weaver VM, Navas-Acien A (2012) Second hand tobacco smoke: a source of lead exposure in US children and adolescents
'Poirot smiled kindly on me
Smoking increases esophageal cancer risk by exposing the esophagus to carcinogenic chemicals found in tobacco smoke, which directly damage the DNA in cells lining the esophagus and impair their ability to repair themselves