More and more evidence suggests that microorganisms are
present together with air pollutants, which may exacerbate current
respiratory diseases or lead to an increase in morbidity and mortality
owing to respiratory or other diseases. Nevas et al. reported
Clostridium botulinum type B was isolated from the gut contents of
an infant aged 11 weeks who died suddenly, as well as from vacuum
cleaner dust found in the infant’s home [27]. Genetic similarity was
found between the two isolates, demonstrating that dust may act
as a carrier of C. botulinum spores, which can cause sudden death