
Bacteria
E-Coli, MRSA

Viruses
SARS Covid-19

Mould
Bathrooms, humid areas

Pollen
Window surfaces, carpets

Pet dander
Carpets, curtains, furniture

Ammonia
Fertiliser, cleaning products

Formaldehyde
Cigarette smoke, gas stoves

Solvents
Benzene, serpentine, ethanol

PAHs
Plastics, dyes, pesticides