a humans is used to smell microscopic nothing by birds by wash them appear bigger
rats has exquisitely_sensitive_sense_of_smell stink_bugs is insects. odorless_thing is tangible_thing. smell_of_chloroform is localized_spatial_thing. mouthwash is makes_breath_smell_good. washer is tangible_thing. sniff is smell. one_use_of_nose is smell_things. dogs has stronger_sence_of_smell_humans stinker is thing.