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Can secondhand marijuana smoke worsen my dog's heart disease?

Updated On September 23rd, 2025

If my pomeranian with heart disease/heart failure is exposed to secondhand marijuana smoke, could this make his disease worse?

1 Answer

Most Helpful Answer

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Answered By Dr. Melanie, BVSc MS

Veterinarian

Published on November 27th, 2016

Dogs should never be exposed to secondhand marijunana smoke regardless of whether or not they have heart failure. Dogs have very sensitive lungs, and the smoke can damage them. Given that your dog already has heart failure, there will be damage to his lungs from fluid build up, and he should not be exposed to anything that could make his lungs more damaged.

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