If you stick a sharp knife through them, they should be soft enough to do so without effort. If they are hard, then they are not cooked.
Aweful smell when I opened a new bag of brussel sprouts. They looked very fresh, but the smell was quite aweful.
Concerned to eat.
How can you tell by smell if no visible signs?
Smell, appearance and texture should tell you if cauliflower has spoiled.
if they are soft and duller or browner than when you bought them.
asparugus
You know when french onion dip has gone bad because it has water on the top.
All food make you have gas, but especially fibre rich foods such as brussel sprouts, cabbage, spinach, baked beans etc. carrots would probably only give you bad gas if you ate them excessively.
when it does not work
you know when you are not cotrolling the car.
It depends on the digestive system of the individual. Beans (such as chili), brussel sprouts, broccoli, some peppers, spices, etc. will cause a build-up of gas and thus flatulance.
If you eat it and then throw up. ;)
check it
If it is stale and a very light brown and nothing grows on top of it, then you know you have bad soil.
It will probably smell bad or have a noticeably weird flavour to it.
It as a dark color and it emits a bad order that is easily recognizable
Swap it with one you know is good.