Last week I popped a bit of WD40 in my bike lock to loosen it up. Not loads just a bit. Throughout the week i've used the bike key in that lock once a day. Today my toddler managed to hook my keys off the side and when I turned round had the metal bit of the bike key in his mouth and was jangling the keys about. It would of only been in his mouth for a few seconds, there was no evidence of any oil on the key, if there was some it probably would of been trace amounts that had rubbed off slightly from when it went in and out of the lock. So in theory there may of been a small amount of wd40 on it but hardly anything. I am rolling my eyes at myself here but I have OCD so sometimes it is hard to know what is my anxiety talking and what any parent would worry about. This was about 3 hours ago. He has been FINE since. What do you think, he is 19 months old. Would you as a parent without OCD be worrying? Have called GP but the receptionist keeps just telling me to submit a query online to be looked at at some point over the next few days. Can I get a few other thoughts to give me some perspective here? Thanks lovely folk of Mumsnet. ** posting in both general health and parenting as I wasn't sure which was best. Will delete one if it is against guidelines to post twice. Wasn't sure!!