Yesterday I used a bag of Curran blend pellets in my stove on low. Thought there was a bit of a funky smell but thought it was just because a different brand of pellets than I normally use. Today, being a bit cooler, used a second bag and upped the heat setting to two. Within 20 minutes of turning it up I hear the C02 alarm going off. Check the stove and the hopper is full of smoke and it's seeping out around the edges. The smell is awful! I have about 15 more bags of these Currans because the supplier was out of the regular brand and I thought I'd try these. So do I return these bags because they might be contaminated with some kind of chemical or risk burning them again?