Nasa are late to the party.
I already microwave my pants.
NASA have moved at last to tackle the problem of dirty astronauts by commissioning a microwave with air-jets to clean underwear in space. There are no washing machines on the International Space Station so grime-encrusted nauts will wear underwear for 3-4 days and other items of clothing for months, before disposing of the …
I don't know what world you live in, but here in Middle America, the lads do their own cooking and cleaning and laundry. If you don't, you'll never attract a woman, because they eat out, hire maids, and take clothes to the cleaners. (No wonder single men are more likely to afford a house downpayment sooner.)
True story: a while back, the elder lad came home from school and told my wife that he needed to bring in baked goods to school the next day. (He wasn't slacking to let us know, the unfireable teacher did that.) She nodded towards me and said "Ask your step-father." So the lad and I made them. When he complained, I told him "The way to a woman's heart is through your wallet. We're not wealthy, so your best shot at a girlfriend is food."
Two years on, he's in junior high and boy, does he remember that lesson now.
Those of you suggesting that they just "hang them outside" might really be on to something. The vacuum should desiccate and disperse quite a bit of undesirable material. A little pre-treatment with some type of catalytic agent might do the rest; that would need to squeezed/spun out of the clothes before "airing the dirty laundry," and would ideally be reusable.
Down-to-earth dry cleaning is interesting, but I suspect would not get off the ground due to the risk of the chemicals' leaking into the confined crew compartment.
You say that like it was unusual.
They have a similar problem on submarines. They just stuff the lot into a tube and fire it out when it gets too unbearable and they are heading home.
But, seriously -- jcloth style paper kecks -- then out the airlock. Solved.
It might be you on a Virgin Galactic flight in 5 years time when your lovely view of Earth from LEO is rudely interrupted by a pair of shit-stained jcloth style paper kecks smashing through your window and then your skull at 20,000 km/h. It's exactly that kind of "out the airlock" mentality that's starting to make orbiting this planet an exercise in rocket dodgems...
But you are just as likely to be hit (if you are going to be hit) by a lump of naturally occurring primordial iron.
Virgin Galactic won't be happening in five years time. In five years time no one will be prepared to take the insurance risk of the whole venture. You'd better believe that.
Poo incinerator output goal is CO2 + water. Below is an excerpt from Wikipedia on the uses of Carbon Dioxide...
"Liquid carbon dioxide is a good solvent for many lipophilic organic compounds and is used to remove caffeine from coffee. Carbon dioxide has attracted attention in the pharmaceutical and other chemical processing industries as a less toxic alternative to more traditional solvents such as organochlorides. It is used by some dry cleaners for this reason. (See green chemistry.)"