This may sound overly simple, but I think it has a high chance of working very well.

Just as lights and sounds from reality incorporate themselves into our dreams, smell works the same way. Here is the method - SMILD (Smell Induced Lucid Dream).

1.) Make it a very strong habit to always test reality whenever you smell fragrance "X." This "X" has to be a fragrance that is easily identifiable. No perfumes or other "complex" smells, but something simple and natural-smelling like peppermint, lavendel, apple, vanilla, etc. It also must be a smell that you can easily use in your bedroom.

2.) Now you have to apply this smell in the environment in which you sleep. It could be on your sheets, on your pillow, or perhaps in your entire bedroom. In other words, it has to be in high concentration, and not a "weak" smell.

3.) With this smell present while you sleep, the goal of course, is for it to transfer into your dreams, and be "smellable", while you do your dream activities. Whatever you dream about, whether it be walking, flying, cooking, running, whatever it is, you should be able to smell at least some of this fragrance. Since you are physically breathing it in, there is no reason for it not to transfer into the dream. And if you can smell at least some of it, and recognize what it is, then that's all you need to trigger the RC.

4.) If you're good with #1, to always do the RC when you smell X, then it is very likely you will have a lucid dream (in this case, a DILD).

Maybe worth a try? What do you all think?