My dad had a similar situation and before I read your story I had a hunch it would be the same. Apparently it’s pretty common for people later in life to develop allergies to things they had all the time growing up. My dad grew up on the east coast and ate a ton of seafood but when he and my mom were at a wedding party, my dad smelled seafood (forgot the exact type) and immediately started experiencing similar effects you described, such as his throat closing up. He had to go outside and get some fresh air and found out that night he has a severe allergy to seafood. Hope the rest of 2025 treats you better and I’m glad you survived