Use aroused to describe someone who is emotionally stirred up. The crowd at the protest march might be so aroused with passion that you can almost feel it through the television screen.
Aroused has rouse at its root, an Old French hawking and hunting term that described a hawk ruffling its feathers. Aroused also means sexually excited. Your mastiff is aroused by the neighbor's beagle, who is in heat. You and the neighbor will have to keep the dogs apart for several days or you may end up as "grandparents" to some interesting looking puppies.