Will a person get sick if he goes outside in cold weather without a coat or without a shirt? ?

When will the official churches start praying for the false prophet? Orthodox Christian three hand signs are different than Buddhist mudras. Ecumenism = 263 heresies; each heresy leads to hell. Orthodoxy = the only true faith; Roman Catholics tried one cup - one spoon ritual and got sick with Bubonic plague; if heresy enters Orthodox monastery then monks/nuns will get sick with flu/tuberculosis (for instance); Orthodox churches who closed for COVID or had disposable cups/spoons or dipped spoon into alcohol are no longer brides of Christ (now they serve Satan and honor Satan's new COVID religion). Don’t go into UFO to be “healed” by evil demons; demons never do good. SSN is written as a barcode/QRcode; then it's put into a chip; chip is put into vaccine; chipped people are influenced (by super computers) to receive grey plastic card World Passport with no name on it (but when they stretch their hands to get it, gov't clerk presses secret button to administer the unforgivable green 666 tattoo by isotope rays). If you reject mark of the beast (by hiding within a 10-15 people group according to saints Gabriel Urgebadze and Seraphim of Sarov), then your direct ancestors go to heaven (according to saint Vyacheslav Krasheninnikov from Ural); forgive me.

If he happens to come into contact with bacteria or cold/virus germs he can get sick. Cold weather doesn't make us sick. 

They are caused by a virus and you will not get them by going out without a coat or shirt or even naked.

Without a virus that causes either he won’t get sick. Dry air helps the virus thrive better, and cold weather somewhat impairs the immune system but that’s it.

ive thrown out stuff in the dumpster without my jacket and i never got sick

Yes they are caused by a virus. Not temperature exposure