The smell that you are noticing is a mixture of decomposing skin particles, skin oil and hair. This is because you are not getting the blades clean enough.
Philips (Norelco) has been introducing all of their shaver with the ability to clean them with water, however, this is not a very good way to clean them because the oil in your skin that collects on the blades does not easily clean out with water. If you must clean with water, make sure the water is as hot as will come out of your faucet. A better way to clean it is with rubbing alcohol because it works better and will help kill germs which may cause smell.
Of course, the best way to clean the shaver heads is to remove them individually and brush them out thoroughly. However, Philips made it impossible to remove the blades on the Arcitec models. The Arcitec modelsare simply designed very poorly for cleaning.
If you are unable to thoroughly clean the heads, you may elect to replace them. It is suggested that they be changed every 12 months. You will find replacement heads at shaveroutlet.com. See link below
http://shaveroutlet.com/norelco-philips-rq10-arcitec-replacement-heads-p-353.html