LDPE bottles are chemical resistant so there should be no way for nicotine or flavor to corrode these bottles
Try it with Pluid and get back to me.
The key word is "resistant", and all polymers have different makeups but they're all somewhat reactive to the right substance and it's definitely possible for even not-super-acidic eliquids to break down LDPE bottles over time, it really all depends on the specific flavorings. This chart might give you an idea, and how you can see how various plastics react with substances. e.g., ABS is fine with vinegar, but *milk* will mess it up. Obviously we aren't talking about ABS, but you get the idea.
Plastics Chemical Resistance Chart | Plastics International