IMO it isn'r even right to eat them straight off the plant. It's rabbit fodder. But if you like them then surely your taste/smell if your own judge. If it seems ok to you then I'd think it would be ok.
Well pusskin I am not usually a lettuce lover, but I have discovered a type that I can eat without much distain it's called "lambs lettuce", which unlike that horrible "iceberg", its soft & curly & reminds me of perhaps shamrock !