Please Take a Bath & Don't Come Near Me, PLEASE!

Salam,

I've been teaching for about 7 years now. During my first class of the semester or session, I love to tell my students about the university or now the school's rules. I also tell them my own rules. The rules are the basic things like:
* Don't talk at the back when I'm teaching.
*Use only English in the classroom even when they need to speak to their friends.
*Only person talking at a time.
*Ask questions when they don't understand.

Apart from those rules, I actually have 2 additional rules which are not related to the school's rules. These unwritten rules have existed due to the fact that I have a sensitive nose especially after the age of 30. SERIOUSLY! Since I'm teaching students that come from different countries all around Asia and Africa, not all of them are aware or maybe they are just so lazy to take care of their hygiene. Some of them who come from the 4 seasons countries, are not so used to Malaysia's weather of hot and humid. So, some of them go to class without taking a bath in the morning and some even wear the same clothes almost everyday.

Thus, my unwritten rules now that I made sure to tell my students are:
1- Please take a bath in the morning.
2- Please don't come near me to ask questions unless you have taken a bath or spray some perfumes on your body.
3- Please don't come near me also after you just finished smoking because I hate the after smell.
4- Please invest your money in buying some clothes.

I KNOW SOME MIGHT THINK THAT I'M TOO MUCH BUT YOU JUST HAVE TO IMAGINE YOURSELF TEACHING THEM FOR 2 HOURS AND I HAVE TO ENDURE THE "NICE" SMELL OR BODY ODOR. HEADACHE IS THE LAST THING THAT I NEED TO GET THROUGH MY DAY AT WORK. HAVE YOU COME ACROSS OR EXPERIENCE DEALING WITH PEOPLE WHO JUST REFUSE TO TAKE A BATH WHEN THEY ARE STAYING HERE IN MALAYSIA?