Can yarn be cursed?

I was at a conference this weekend so I used the opportunity to knit whilst listening to the keynote speakers. I had started the project in the hotel room with no problems. Somehow, I lost my count and the pattern wasn't turning out properly. I pulled the stitches out and began again. A few rows in, I noticed that I'd dropped a stitch (I never drop stitches!). Since I wasn't the far along, I pulled out the stitches. I'm almost afraid to try again. Can yarn be cursed?