I picked up a couple of wood spools (like this one: http://pinterest.com/pin/229331805995147761/) to use them as a coffee table or side table or bookshelf/case or something. Are wood spools susceptible to the same issues as wood pallets (i.e., formaldehyde, e. coli, mold, bird/rat waste, insects, etc.)?
It's earth-borne, like all bacteria. The human gut has thousands of various strains (types) of E. Coli present in it. It's a generally "good bacteria". But a few strains of e. coli are pathogenic and can make one ill, or dead. These are the strains which make the evening news.