If food be contaminated beside botulism, would you be capable of detect it by savour?
Answer:
No. The LD-50 for the botulinum toxin is in the microgram continuum. That being said, when you embark on the can (it's always an air-tight container - the botulinum is anaerobic), it will probably stink. The byproducts from anaerobic digestion are methane and sulfides (rotten eggs).
No. And botulinum toxin is so powerful that an extraordinarily tiny amount is life-threatening. Botox is diluted more that you could imagine contained by order to be secure for use.