Again the answer is 100% yes, dirty greasy, door knobs, and light switches, cabinet door handles, and the smell that goes along with it. It only takes a little bit of yuk, to make a potential buyer turn away from your home.
You tell yourself that the buyer is going to fix it up anyways. Well not so true with a shortage of trades and the wait time to get in professionals. Now is a good time to have you place flawless and ready to move into.
If you want some guy to come in and flip it for a profit the profit comes from buying low, fixing it up then selling it for list price. Their profit will be coming out of the seller up front by offering well below list price.