i have a negative ion generator always running... though it's a shitty design, i found a nice one but for some reason couldn't get it shipped...

they are easy enough to make, just an array of ceramic capacitors to boost the voltage to over 4000 with proportionally reduced current, and then you need very fine sharp points attached to the negative pole to get them to jump onto the dust and eliminate the positive charged dust (a lot of people don't realise that ion generators just put electrons on dust, it's the same thing that causes clouds to form), the particles otherwise steal electrons from your body and cause a net positive charge... earthing also helps in this same way because the earth provides electrons when you touch earth and your charge is net positive

i'm very curious about how to make these ELF generators though... i kinda have this idea in my mind that the ideal thing would be that it syncs with a detector that picks up the current resonant cavity signal and then puts out that same signal... it would also need a very long wire to emit this frequency i think, i mean like 5m long or more... and as i mentioned in another reply, it should stop if the voltage of the signal gets too high, this would happen from a solar flare or filament eruption 

 Not hard. Search any Low freq sine wave oscillator. Put an audio amplifier and at the exit a big coil if you can resonant. You can calculate resonance in ELF with some online calc. You will need an impedenzimeter because the coil will interact with external metals.  

 would a simple dipole still be helpful? 

 On ELF no. Too long wavelength. Resonant circuit concentrated LC.