1. an
exclamation used when one walks into a room or area that smells
unpleasant. A combination of 'smelly' and 'hello'.
2. exclamation used by others when an unpleasant
smelling person or thing enters into a room or area.
A person walks into a room where a dog has defecated. The person smells the feces and says, "
SMELLO!"
A sweaty man
returns to his wife after working out at the local gym. After approaching her
the wife smells his body odor and exclaims, "Damn, honey....SMELLO!"