Perhaps he has some kind of allergy or sensitivity. If there are allergens in the environment, like dust or certain smells, it could trigger a reaction in his throat while he's talking. Also, if he has eaten something that his body doesn't tolerate well just before telling the story, it might lead to gagging as he tries to speak.
It's not too complicated. Just find some funny or relatable ideas, use simple drawing tools or apps, and add text to express your emotions or the joke.
She might mean that she wants you to stop her from sharing a particular story. Maybe it's something embarrassing or she just doesn't want it to be told further. So, it could be as simple as you agreeing not to mention it or reminding her not to tell it if she starts.
Maybe he's really nervous. When some people get nervous, their throat tightens up and can cause a gagging feeling, especially when they are trying to speak, like when telling a story.
Perhaps it's a very personal and metaphorical statement. Your nose could symbolize your sense of smell which in turn has influenced your life in many ways. You could have memories associated with certain scents that your nose detected. These memories and experiences related to smell could be what the statement 'my life is a nose story' is all about.
Well, sometimes the software or website you're posting on has automatic formatting rules. Maybe italics are used to distinguish your story from other elements or to add a visual cue for some reason. It might also be related to the theme or template you chose.