Question regarding bad gas smell

Just got my snowblower back from having the carburetor rebuilt and was told to turn it on once a month and run it for five minutes until we get snow. I pulled it a few times to start and it would turn over. I primed it a few times and noticed a small amountPictures of gas spurt out when I primed it. Got it to turn over, ran it for a few, and ran it into my stretched garage and turned it off. I’m now getting a bad gas smell in the garage which is now coming into the house. Any thoughts on what this could be? It’s also non-ethanol gas…is that why it smells different than the gas I would put in my car?

Edit: this is a Taylor 8HP snowblower and have included some pics

Snowblower