If you're concerned about unwanted smells, then coveralls are a very sensible purchase. They'll keep your clothes odour-free and protected from essential oils, which can be difficult to remove. They're priced low enough to use once and throw away, so there's no need to worry about washing them.
 
Protects you and your clothes from essential oils and odours when handling plants
Cost-effective enough to be used once and then disposed of
Perfect for use when trimming and harvesting
Features elasticated ankles, cuffs and hood for a snug fit
Great for an array of other jobs, like painting
Keeps you protected from splashes of liquid (though not fully waterproof)