I keep saying 'ingen fara' in response to people thanking me and I can't stop. I got in the habit of saying 'ingen fara!' instead of 'varsågod' as I took it to be more casual and I found that the 'sh' sound in 'varsågod' drew more attention to my pronunciation here in Malmö. 

I now say it by reflex and have a feeling that it's not actually applicable in most situations (i.e. where people thank me for something that's not meant to have troubled me in any way). Should I try and swap it out for a different phrase, or is it more flexible than I think?