While many people choose not to use chemical chlorine bleach in their home, there are those of us who still use it to disinfect and brighten whites when doing laundry. When used properly, chlorine bleach can be safe. And many of us know that when mixed with acids -- like ammonia -- it can be very toxic since mixing bleach with acid turns it into chlorine gas. But that warning also includes ALL acidic products, including seemingly harmless white vinegar. If you do buy chlorine bleach, designate a sole reusable bag for it, and don’t put anything else with it. Accidentally dropping a grocery bag with both bleach and any acidic product could create an unwanted chemical cocktail in your car.