Averse and adverse or often confused with each other. They are not interchangeable.
A person can be averse, meaning they have an aversion - that is, something they try to avoid. If you have an aversion to risk, you are risk-averse. Interestingly, I don’t think I’ve ever heard that phrase used for other situations, e.g. a person who has an aversion to dogs is never described as dog-averse.
Conditions or effects can be adverse. Adverse weather, adverse economic conditions, and so on. Adverse weather will have an adverse effect on your travel time.