as you already have mentioned about “safai nisf iman hay” i wont talk about that. and of course you know that one of the most important and regularly followed and most emphasized faraz is “Namaz”, 5 times a day, and i’m sure you also heared about “taharat”? a faraz which has to be performed 5 times a day cannot be performed without proper cleanliness (taharat), you can easily guess the level of emphasize on cleanliness in Islam.
now about the bold part, yes i think you may be the only one!!! may be your locality is like that? or may be the “islamic men” you are talking about are not really that much islamic as you said. you start going to a masjid to offer namaz regularly on daily basis, and you will notice that those who follow islam according to sunnah, they really are one of the most clean and hygiene conscious people around! at least that’s my experience, lets hear from those who go to masjid on regular basis, and pray with these “bearded” men you claiming are not clean…
and one important thing, always remember who are the two guys you are comparing? what is their nature job? what does their work demand from them? if you compare a guy with some white color job all day siting in an air conditioned office who doesn’t have a beard with a laborer who’s job is to do very laborious work under the sun, or lets say a “chowkidar” who stands all day outside at the gate of your office, and then you claim that you smell odor from these guys but not from the one who’s siting all day in an air conditioned office, of course then you are doing no justice… and actually trying to make mockery of one of the very much emphasized sunnahs of our beloved prophet Muhammad
by just saying that people who follow this, they stink! i hope you understand the point, and wont like to face the consequences of saying so
just remember the possibilities and level of facilities available at the disposal of both…
having said that, yes one must employ ALL possible means to remain as clean as possible, and attain the level of taharat required (we are only talking about physical cleanliness, taharat, not tazkia)
and let me quot something from Quran, ALLAH
says, while praising men who pray in Masjid-al-quba"…Therein are men who love to cleanse themselves; and Allah loves those who cleanse themselves" (9:108)