aerosol
apartment
assignment
bacteria
clean
cleaning
coronavirus
covid
cure
daily
daily routine
disinfecting
duty
epidemic
flu
health
help
housework
illness
indoor
infect
infection
man
mask
medicine
outbreak
pandemic
pathogen
people
prevention
prison
protection
quarantine
room
routine
sars
schoolboy
sick
soap
spread
stay at home
symptoms
task
vaccine
virus
young