Vinegar doesnt smell aftherwards, if you are really afraid of that you can use some etheric oils with the vinegar.
But the vinegar can ruin the elastic in the clothes over time, I would never use vinegar for my strechy jeans.
And yes, it is possible to get skin irritations from vinegar, but I dont think thats normal. I have only seen this on babys using cloth diapers.
Im using vinegar for my towels and bedsheets to make them soft. I dont use it for my clothes.