Smelling things in the fridge

My mind is driving me crazy ! Thought i had a stomach bug for the past five days but couldn't figure out how I got it stay at home girlfriend ( mutual choice ). Today i went into over drive (first day i wasnt puking ) and wanted to clean everything in sight because I kept smelling something funky. My S/O kept saying yeah its all the cleaning your doing but it smelt sour. Finally made it to the fridge after deep cleaning every thing else (save worst for last) and figured out what the smell was. Perfectly GOOD in date STILL packaged hamburger meat. The smell of it was so strong to me i puked upon picking it up. Asked my S/O to smell it and he said he didnt smell anything. I had to throw it away because i couldnt handle the smell of it! Ugh cant test for another four days either. Anyone else able to smell things in the fridge ?