I read from many sites botulism spores are everywhere in environment even on your carpet my question is i have infant in my home so should b i concern about spores because my daughter put everything in her mouth crawl on carpet too?

The spores are harmless. Only conditions that permit transition from spore to active bacteria result in botulinum toxin and can cause botulism. That means a strictly oxygen free environment, as well as other conditions. The main source of human botulism remains improperly prepared home canned food. Non-commercial honey also can be a source; feed no honey to young babies. Otherwise no worries.