greenfuse grow stimulator

hi there i use ionic nutes and greenfuse stimulators ,i keep the bottles in a little storage box, my question is how long do these chemicals last being stored and do they go off as in out of date ,the reason i am asking is because today i was sorting the bottles out and i opened the greenfuse grow stimulator and it smells a bit bad i cant remember it smelling like that before and none of the other bottles gf bloom stimulator or anything else smell this way,i dont know if its normal or theres something wrong as all the bottles are kind of new ,thanks for any help

hey anyone have,a reply for me i showed 2 people the bottle in question 100percent organic fully solouble greenfuse grow enhancer,
1st guy said theres nothing wrong with it .
2nd guy said its smells off and he wouldnt use it.

so not sure but it does have a kind off off smell ,and when mixed with water the smell is still sort of there its like a rotten smell and i cant remember it being there when using it the first time its a smell you remember,so if anyone has any reply on if its normal or off or what as it wasnt a cheap little bottle of stuff but at the same time if its bad i wont use it so ye thanks again people

id call the company that makes the nuts and ask them