Is it valid for a person whose clothes are not clean to use that as an excuse for not praying in the mosque?

The questioner : ... his clothes are not clean, so he says, "I will not go to the congregation..." and their clothes are not clean, which may contaminate the mosque?

The Shaykh : In any case, the workers whose clothes are not clean... the people, because they have a bad smell. And since the Messenger of Allah (peace and blessings be upon him and his family) ordered the one who ate onion or garlic not to approach the mosques, we say to these people: do not approach the mosques. Yes.