To smother means to cover something completely so that it can't get any air. Also, to smother can mean to cover someone with love or kisses.
Smother can make people think of feeling trapped or overwhelmed, or of feeling very loved and cared for.
Examples:
The fire will smother if you cover it with a blanket.
She will smother the baby with kisses.
Don't smother the flowers with too much water.
I don't want to smother in this big coat!
The cat will smother the mouse with its paws.
She will smother her dog with love and treats.