For some unexplained reason, I have observed this effect subtly on a small number of meteors, but only one was very obvious. It is still fresh in my mind. In July 1994, while observing in the late evening from my backyard, a magnitude -2 slow speed sporadic in the northeast caught my eye. It was a long persistent 30 degrees path, lasting a few seconds. I had time for a good long look at it, so optical illusion or atmospheric effect is out of question.
Photographic evidence is available.
It looks quite convincing to me. The caption beside the photo claims that at least 1 out of every 200 meteors follow a slightly wavering path. Curved meteors I have noticed on several of my older reports going back years ago, I often mentioned as remarks that I have seen a curved meteor. Years later, there were seen less often, and now I never see this effect anymore. Another factor are birds and insects.