Strains that trigger no symptoms in animals will make persons sick, and vice versa. If existing in foods, it does not usually have an impact on the flavor, scent, or physical appearance of the food. The microbes are now living in the intestinal tracts of infected animals and humans. https://tvsocialnews.com/story5325801/the-smart-trick-of-how-toxic-is-botulinum-toxin-that-nobody-is-discussing