I think it's better than nothing, but probably not equivalent to something like scent training. The way my dog breaths when searching for a scent is really pret

I think it's better than nothing, but probably not equivalent to something like scent training. The way my dog breaths when searching for a scent is really pretty crazy. Imagine trying to inhale sharply twice a second. Just performing the physical act is tiring for me. If you haven't tried scent training, I highly recommend it. There's plenty of information online about it and it's really simple. You can even take a dog treat, put it in front of your dog, and say "find it." Keep moving the treat back until you get it out of sight. Then move on to hiding it in the couch, etc. My dog can find a tiny, 1 cm square of rubber in a huge grassy field. It's impressive.