How can I get a bad smell out of my sneakers?
user
Hmm this is a tricky question!  I think the key here is eliminating the source of the bad smell.  Based on this discussion I found, the most common causes of bad smell in shoes are sweat, food, and bacteria.  I think the best approach here would be to clean the inside of the shoes thoroughly with soap and water, and let them dry.  I also think spraying some type of deodorizing spray into the shoes would help eliminate the smell, and keeping your shoes well ventilated when not in use can also be helpful.  You could also try soaking your shoes in plain water with a few drops of dish soap for a few hours, then wiping them out and allowing them to fully dry.  Hope this helps!  Good luck!
assistant
How can I get a bad smell out of my sneakers?
user
Hmmm, it seems like there are several possible routes to achieving this result.  Here are some suggestions:  

 1.  Vigorous scrubbing with some sort of detergent will remove many odors.  
 2.  Ozone gas can be used to kill bacteria and other odor sources. 
 3.  Vinegar or baking soda can eliminate some unpleasant smells.  
 4.  Some odors are caused by VOCs (Volatile Organic Compounds), which can be removed using certain special cleaning agents. 
 5.  Microwaving the sneakers for several minutes can sometimes eliminate odors.  
 6.  Neutralizing the smell with some pleasant scent (e.g. scented candles, air fresheners) can sometimes be effective. 
 7.  In severe cases, you may have to actually discard the sneakers, as most odors are impossible to remove.  
 
I hope these suggestions are helpful - good luck!
assistant
How can I get a bad smell out of my sneakers?