I bought a 20 lbs pound of potting soil to re-pot my indoor plants. A week after doing so my rooms that the plants were in started to smell really bad. My eyes started to burn, got a terrible headache and I could not breathe. I took all the plants outside, opened all the windows and doors and the smell went away. I lost 2 large Christmas plants that came from my husband's Family. Also 2 other large plants. This was one of the most awful experience.