Well as general day to day fears, spiders and heights make me feel very uneasy. But those I can cope with.
But as a serious, actual phobia? This stuff.
I have chionophobia. A genuine phobia of snow. If it snows while I'm indoors, I hibernate, and do everything I can to avoid going outside in the stuff.
If I'm caught out in the snow, then I start suffering panic symptoms. A horrific dread just spreads through me, I start to hyperventilate. If I don't get indoors and get the panic under control, it can lead to fainting. Not pleasant, especially when the only thing to land on is the very thing that caused the fainting in the first place.
Use to be much worse. Used to be that even the slightest ground frost would do this to me. Thankfully, I've started to learn how to cope. Still gets to me quite badly though. At the first sight of snowfall I become very restless, pacing, unable to sleep well. I have to force myself out into it in stages and keep pushing myself. Make a snowball, mess with it, retreat inside. Make a tiny snowman, mess with it, retreat. I can take several days but I'm at the stage where it no longer stops my life completely. Thankfully.