Yes, it would. That's the joke.

Seriously, though, the only things that get you high are psychoactive substances. THC is a psychoactive substance produced by the cannabis plant. If you want more of this high, you have to ingest more THC (which means more of the cannabis plant). If you want a different high, try a different drug. If there was something that was easy to get and safe that increased the THC high, don't you think it would be a well-known fact?

If formaldehyde gets you higher, logic says that if I smoke formaldehyde I will get higher. The scientific evidence, however, says that this won't get me high at all and will instead just do damage to my body if not kill me.