When I am at work, when i start to hear more than one person coughing, I wear a surgical mask so I dont breathe in thise spores. In public i wear a mask as well.
My job requires a lot of hand washing, so i constantly was and sanitize my hands even more than the other people. I work in a factory that makes food. So we are always washing and sanitizing our hands. My crew on the sanitation department wash our hands even more because we have to touch a lot of nasty stuff.
At home about every other day, even though it's cold out, i open all the windows for about 5 minutes to let fresh air in. My doctor told me to do this. She said the main reason we get sick is not because it's cold out, the coldness kills germs. It's because we breathe in the same air. The furnace will recirculate the air and after awhile of no fresh air, it just recirculates the same air and it breaks down making us feel sick. Same thing happens in summer with air conditioning. So she said to open the windows to let in fresh air to prevent sickness.
So think about this. Are you ever sick in the summer at the same rate you are in the winter? I bet the answer is no. The reason? In the summer you probably have your windows open if you don't have air ( or even if you do have air but it's not scortching hot) and you're outside more. The winter you are just the opposite, windows closed and you are inside more. Hmm ouside more and windows open not sick in summer. Inside, windows closed, sick more often in winter.
So be sure to open those windows in the winter for just a few minutes to get fresh air into your house!!!!!!!!
Tht windows don't need to be wide open either. Just a ½ inch / 1¼ cm will do.

5000 mgs of Vitamin C taken orally at the first trace of a cold coming on. Then do it for the next few days or until that initial feeling is gone. No substitutions! Pill form
My mom didn't have a cold 20 plus years.
I haven't had a cold for over 10 years.
And I use common sense actions when I see others with a cold that didn't follow my instructions lol

A doctor recommended that especially in winter - wash your hand every time you walk past a sink. Here in Toronto, Canada, in winter everyone ( hopefully ) is scarfed and gloved and wearing a hat of some sort or other - but always wear gloves in Autumn/Winter - never touch the counter or arm rests or put your day pack or whatever you carry around on the floor in ANY Doctors office, Hospital, Transit - and never read magazines in hospital settings, never touch door handles and use paper towels to open the doors of any and every rest room. Get a good nights sleep whenever you can. Eat well. Hold your head high Dress warm Now go and have some fun . . . .

Get a flu shot and a pnuemonia vacine

Number one way to transmit disease is by touch. Wash your hands constantly and plan on using lotion as the air gets colder too.