did i miss a secret rule in society

hey guys so whats up with verbally screaming out your thoughts if its not something that needs immediate attention? im wasian so a lot of my food smells a LITTLE, thats why i eat in my moms classroom. all fine and dandy however for some reason whenever people enter the classroom after lunch they need to verbally scream out "OH MY FUCKING GOD WHAT THE FUCK IS THAT SMELL????!!!!" which i agree, my food might smell bad. but if its just chicken idk why we need to be fake gagging, using paper plates as fans, spraying your perfume/cologne everywhere, opening every door and window known to man, and of course discuss who the culprit of the smell is. im not sure if i missed out on the societal rule norms because i have a freind to eats with me and she says herself that its really not THAT bad.. this is kinda just a rant but if yall have any clue why people need to verbally express how "they cant even fathom a description of that utterly putrid smell that smells like my dog food" over some soup dumplings please lmk, over and out 😜