Marvel: Foreign Chemical Immunity

Cain Marko (Juggernaut)
Juggernaut is also immune to all toxins, poisons, and diseases.

Carol Danvers (Ms. Marvel)
She possesses an amalgamated human/alien Kree physiology that grants her a degree of immunity to toxins and poisons.

Jessica Drew (Spider-Woman)
Spider-Woman's metabolism rapidly creates powerful immunities to all forms of toxins, poisons, and drugs, after an initial exposure that usually makes her dizzy.

Laura Kinney (X-23)
X-23's natural healing also affords her the virtual immunity to poisons and most drugs. She can be affected by drugs, such as tranquilizers, if she is exposed to a massive dose.

Peter Parker (Spider-Man)
Due to his accelerated metabolism, Spider-Man has a higher tolerance for drugs and diseases than normal humans, and he can recover from the effects of larger doses rapidly. During an encounter with the Swarm, Spider-Man was incapacitated by thousands of bee stings, but recovered in less than 24 hours. His resistance and recovery time to other toxins and diseases varies, but is typically significantly higher than normal. Spider-Man's unique physiology even allowed him to recover from the effects of vampirism as stated by Blade, his radioactive blood will kill the enzymes responsible for his transformation and revert him to normal. Spider-Man was able to recover completely from acid being spat into his eyes by the new Vulture although the extent of the damage may have been restricted due to his superhuman durability. However. Spider-Man has the normal human tolerance for alcoholic beverages.

Victor Creed (Sabretooth)
Sabretooth's natural healing also affords him the virtual immunity to poisons and most drugs. It is virtually impossible for him to become intoxicated.

Wade Wilson (Deadpool)
Deadpool's body is highly resistant to most drugs and toxins. For example, it is extremely difficult, though not impossible, for him to become intoxicated. He can, however, be affected by certain drugs, such as tranquilizers, if he is exposed to a large enough dosage.