Ahsan allahu ilayk Salam Aleykom wa rahmatullahi wa barathu Somedays lm very gazy so I pass wind alot. Then when I check my trousers there is like clear color from the farts. Like unclear yellow. Does this count as najis? JazakAllahu khayran

Ustadh AbdulAziz al-Haqqan
I think you're suffering from OCD, because gas on its own doesn't do that.