No because medieval folk washed regularly.
Here's a couple of previous answers with follow ups.
https://reddit.com/r/AskHistorians/comments/gtvw7t/how_is_it_possible_that_after_the_roman_empire/fsiyoaz
https://reddit.com/r/AskHistorians/comments/fa8az6/im_a_medieval_english_peasant_how_much_am_i/fiwyo4k