Coughs and Sneezes spread Diseases

I've got a cold, it's a typical head cold; coughing and sneezing, a bit of a headache and generally lethargic, it's annoying but not bad enough to keep me off work.
However, should I be more considerate and think of my passengers? It's obviously contagious and there's a high probability I'll infect some unsuspecting customers?
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