@SirQuintusAureliusMaximus I absolutely disagree. Yes things like the name Myra for example crops up sometimes and people who are too young or from another country might not make an association that a lot of people in the UK would. However, even then, all it takes is imparting the information to the person - not the sneering and carrying on. There seems to be this assumption on here that people are using unusual names to stand out or because they think they're all that rather than because that name is perfectly standard to them - it's the assumptions that are mindboggling here. It's nothing to do with bekind. I think you're quite confused about that. It's about not being rude or sneery.
Camilla sounds more like Chlamydia than other names but weirdly people don't go on and on and on because Camilla is very well known so people aren't looking for the association, and also it's quite upper class, I'd venture, which always seems to help for some weird reason. Lydia is another very commonly used name that could be argued to be closer to the sound of Chlamydia. As that's the only std I can think you're all referring to. I think it's just because Clelia is more unfamilar that people are going on this way. It doesn't sound anything like STDS like gonorrhea etc. That's just ridiculous. There are a billion "lia" names popular right now. Again, it's just lack of familiarity I'd be prepared to bet.
Mumsnet constantly suggests names like Lydia or Astrid, which could have far more trouble in the playground if it came to it. But they are both nice names. I doubt that many people do have trouble in the playground with those names.
Noone sees a problem with the name William these days or Thomas despite the slang association. People are going oh she's be called Smellier Clelia. Really? But Ellie is far easier to turn into Smellie Ellie if you want to and yet mumsnet bemoans the zillions of Ellie's about at the moment. A whole generation seems to be having no trouble in the playground by being called Ellie.
Clelia/Klelia is a far nicer name than many suggested such as Celia or Delia or Camilla and is nicer than Cloellia that people are suggesting. It takes a minute or two to work out how it sounds but once you do it's a pretty sounding name and fairly easy to pronounce. It's just unusual in the UK. But I doubt it will be in the future as lots of names commonly used abroad are becoming more standardly heard here and people just think "oh like Klelia at school" or whatever.