As someone who uses gadgets daily for quick family meals, I can tell you that using Pyrex in an air fryer is totally fine... provided you follow basic rules! First, check that your dish is genuinely oven-safe borosilicate or tempered glass. Second, never put a cold dish straight into a preheated air fryer because thermal shock will shatter it??? Third, make sure there is enough space around the sides for hot air circulation. Since your dish is quite old, inspect it thoroughly for any invisible hairline fractures before cooking!