Are there clothes that actually repell mosquitoes?

The THERMACELL Mosquito Repeller cartridges typically last for 12 hours when used on the high setting and 24 hours when used on the low setting. It is recommended to replace the cartridge when the repellent begins to run low or when the repeller stops producing heat. Additionally, it is important to replace the repeller cartridge after extended periods of non-use. For more information, you can read User Manual.

According to Joseph Conlon, a medical entomologist and technical advisor to the American Mosquito Control Association, mosquito season is already bad - and West Nile Virus, which is most commonly transmitted by the pesky insects, doesn't even really kick in until late summer. Plus, studies have found that certain types of mosquitoes are more likely to snack on pregnant women.
"Pregnant women may be more attractive to mosquitoes," Conlon says. "If the pregnant female is breathing more due to carting about a bit of extra weight, then she will also be a bit more attractive to mosquitoes, because mosquitoes are attracted to carbon dioxide." Plus, pregnant women have a warmer average body temperature, which is a cue for biting and landing, he adds.
So use mosquito repellent for baby and also during pregnancy

No but skin so soft from Avon does

I personally find the Autan very satisfying. This brand provides several kinds of products in different forms, like long lasting protection sprays, pumps and wipes, after-bite gels and creams, baby sprays and sticks, aftersun lotions etc. And they are all particularly gentle on the skin, especially the Family Care.
Here is their website:
http://www.autan.com/nqcontent.cfm?a_id=1

Cloth treated with insect repellency offers a long lasting protection against mosquitos and unlike the traditional repellent, the repellency is near your skin not on it which alleviate concerns about skin diseases caused by long term use of the traditional insect repellent.

Insect repellent is not an advised solution in these cases. It's less effective and much more expensive than a mosquito net and can also cause health risks with long term use.

This WEB site has home made mosquito repellent recipes.
http://tipnut.com/homemade-mosquito-repellent/

I also have type - O blood, and have not noticed this trend (I actually get bitten less than most). I think it is more likely that there is some pheromone in the sweat of the person you speak of (you or your friend with type-O blood who gets bitten more often) that is attractive to the bugs. If mosquito sprays, Tiki Torches and citronella candles are not working, try one of the new "Off Clip On" mosquito repellants ... that might help you out.

Mosquitoes are attracted not only by things like the CO2 that you exhale, but they are also attracted by the odor that are blood secretes through our skin. For some reason that scientists haven't figure out yet Type O blood secretes more chemical "odor" than any other blood type. The interesting thing about all of this is that our genetics will control whether or not we will secrete those "odorant markers" through our skin. For some reason people with Type O blood are genetically pre-disposed to secreting that odor through their skin. Some people genes stop them from putting out any type of odor from their blood at all. This of course doesn't mean that they will not get bitten at all. It just means that their blood "smell" will not help to attract the mosquitoes to them.

So if you are a Type O person, once the mosquito is attracted to you by your CO2, your blood odor will help to make you attractive enough that not only will the mosquito come to check you out, she will also probably land on you and bite you. Type O or not, the best defense against the mosquito is still either staying indoors, using mosquito nets, or using any repellant that contains DEET. This is still the single best repellant agent out there to use against the little blood suckers. As some people can be sensitive or allergic to DEET make sure that you try some of the repellant on a small patch of skin to see if you have any reaction to it before rubbing or spraying the repellant all over your body.