3d
alert
area
bacterial
beware
bio
biohazard
biologic
biological
black
caution
closeup
contagious
contaminated
contamination
danger
dangerous
environment
forbidden
hazard
hazardous
icon
infectious
isolated
label
macro
notice
protect
protection
rendering
restricted
risk
safety
sign
signage
signal
substance
symbol
threat
toxic
virus
warfare
warn
waste
weapon
yellow