My dog..............sick?

ok well my friend just took her dog to the vet and the vet said that there was an outbreak of pyro (sp?idk) in dogs in the town i live in.and i went to her house and the vet said that i probably gave it to her dog.her dog is a female teacup chihuahua and my dog is a male terrier mix.my dog and her dog have never been in contact other than me touching my dog then touching her dog.i want to know whether anything could be wrong w/ my dog.he is acting normal....and can u tell me the effects of pyro?(once again..sp?idk)