Not all of them are, but some will be broken down into harmlessness by the stomach juices.
Yes it is totaly harmless
A toxoid.
Toxoids - 100% sure on it
Most snake venoms need to get directly into the bloodstream to work. Snakes keep their venom in an isolated sac. If they get any into their mouths, it is swallowed and digested to harmless substances, so the toxin doesn't get into the bloodstream. It is also thought that, to some extent, snakes have natural antivenom in their systems.
because it has harmful gases but it has no harmful surface so you can swallow it
Ricin is a proteinic cytotoxin derived from the common castor bean, Ricinis communis. Recovered from the meal of castor beans in the castor oil making process, ricin toxin is perhaps 1,000 fold less toxin that botulinum toxin. Ricin is most toxic if inhaled and least toxic if swallowed. It has the potential to be used as a chemical warfare agent.
No, not as far as I have ever heard. Latex paint is harmless unless swallowed.
No. There is a good chance that you have swallowed blepharisma in your lifetime already.
It is a biomicrobial toxin.
No, it is not a toxin.
Adults should be immunized at 10 year intervals with Td (tetanus-diphtheria) toxoid. A toxoid is a bacterial toxin that is treated to make it harmless but still can induce immunity to the disease.
Alfa toxin.