This can be the leading cause for foul HVAC odors for many homeowners, which raises concerns about indoor air quality. Another indicator of an indoor air quality problem is the smell of dirty socks. Although this smell may be coming from the air conditioning unit, it is not actually the unit that is the problem.
Device. 1  Ratchet (device), a mechanical device that allows movement in only one direction. 2  Ratchet, a tool also known as a socket wrench. 3  Ratchet (instrument), a type of music instrument.
Definition of rat. rat. B.action done by a person to ruin another person life by telling on them to authorities. C.Person that is responsible of some people incarated because they feel low themselves and want people to believe criminals are it. D.A person that spreads diseases by attack or sexually.