I own a Honda Harmony 215 PX (not self-propelled) lawn mower. This mower was made in the mid 1990's and looks brand new. I think it was used once by the original owner. It was in storage indoors for all these years. I got it out, changed the oil, and it started on the first pull and runs great. I have mowed twice with it. The problem is that when I put it in the garage after mowing, the garage will develop a very distinctive and strong odor. At first, I thought it was some grass left under the deck (I got run into the garage by rain and didn't have time to clean the grass out). But, after the next mowing, I cleaned the under side of the deck thoroughly, and still had the same odor. This odor will last for over a week until the next time to mow. This mower may have been one of Honda's earliest uses of a plastic deck. Any ideas would be appreciated. Thanks.