Reggie's owner rushed him to the vets after he ate a bottle of e cigarette liquid. Sadly, the vet explains that nicotine is very toxic to dogs and can even be fatal. Channel 5 Facebook Are Dogs Allergic to Vapes? Secondhand Exposure Risks Ecigator Do electronic cigarettes create thirdhand chemical residue? Thirdhand Smoke Resource Center Today is 4 20 Here's what to do if you suspect that your dog has ingested marijuana.