I cannot speak on specifics of aura and non-native EMF (electromagnetic frequencies), but know that the body is tuned in to the energy of its natural environment. ALL non-native EMF is harmful to the body, and that includes wifi. Use ethernet as much as possible, and always turn off the radio antennas when you aren't using them, through the use of airplane mode, or network adapter settings in windows. Also, block all blue light, as blue light, not balanced by red as in nature, will destroy the energy production abiltiy of mitochondria. Unfortunately, blue light is the predominate light frequency found in all modern devices and screens. Look at the work by Dr. Jack Kruse for some really good insight on the problem. He states that your light/energy environment trumps diet and exercise for health.
For further information, the FCC ruling on these types of EMF was done in 1996 and on small amounts of exposure, such as 30 minutes, 5 minutes, etc, and all based on usually one device. In our world, today, we are hit by tons of EMF, such as cell towers, wifi, blue light, bluetooth, and it all adds up and hurts the electron chain transport in the mitochondria, ruining your abiltity to produce energy. For reference, mitochondrial disease is said to be the cause of about 80-90% of all diseases you hear of. Cancer, diabetes, heart disease caused by oxidation of LDL? All starts in the mitochondrial and the EMF it is exposed to.