What's the adjective for mildewproof? Here's the word you're looking for.
Included below are past participle and present participle forms for the
verbs mildew and mildewproof which may be used as adjectives within certain contexts.
“Nothing will depress you faster than a dim, mildewy closet to go back home to after an exhausting day of teaching.”
“But during the semester I spent living in a mildewy, shag-carpeted Burnaby apartment, the Shamrock was as much my home as anywhere else in town.”
“There are drive-thru taco stands everywhere, 59 is still under construction, and most the of the buildings have an aroma of mildewy air-conditioning.”