Just about any chemical can be a hazard if it is in the wrong hands, or gets used wrong. But here we are talking about things we throw away that are still corrosive, explosive, flammable or toxic. These things should not go into the recycling boxes. Store it carefully until your municipality has their annual toxic waste collection day.
Don't mix latex and oil paints. It makes a useless mess that is hard to dispose of. Open the can on latex and let it dry out, then it can go in the regular garbage. Keep the oil cans sealed and take them to the special collection sites.
Never mix ammonia and chlorine cleaners as the mixture will give off a very poisonous gas. Keep them apart.