Evasive and shifty
Asked why, a spokesman gave a dodgy answer about legal ramifications.
Unsound and unreliable
Never listen to dodgy advice.
Dishonest
I am sure you wouldn't want to be seen buying dodgy gear, would you? (stolen goods).
Risky
This is a slightly dodgy plan, because there is a lot that is being changed for this fix.
Deviant
He's a dodgy Peeping Tom.
Uncomfortable and weird
I'm feeling dodgy today, probably got the flu.