Even if something seems 'innocuous', it could cause unexpected negative effects later. The innocuous plant in the corner actually turned out to be toxic to cats.
Pro Tip 2/3
Calm Reactions
When labeled 'innocuous', activities or substances are intended not to alarm anyone. The scent was innocuous, barely noticed by anyone in the room.
Pro Tip 3/3
Medical Assurance
'Innocuous' is often used in medical contexts to reassure patients about treatments or tests. The vaccine is quite innocuous and has few side effects.