There have been at least three LENR developers who have noticed intense and widespread EMF interference generated from their experiments that in some cases have spanned a distance of influence of many tens of meters from the LENR reactor. All these LENR experimenters as well as myself all took this interference to be related to RF generation in the LENR reaction. But this assumption about RF might not be correct but instead be related to some form of sub-atomic particle generation via the LENR reaction.
This interference could have a disruptive effect on the body, especially, the electrical nature and workings of the brain and nervous system. This EMF interference has been near impossible to detect using RF meters or to shield against including the use of lead, iron, steel plate, electrically charged metal, mu metal and faraday screening. If the nature of this EMF interference can penetrate deeply and completely into the body and access all the electrical activity in the nerves cells throughout the body, unpredictable complications might be produced inside the body at a considerable distance from the LENR reactor and/or inactive stored used fuel.
Different people might be more susceptible to this type of nerve activity interference than others based on the strength of the interference produced by any given reactor design. If you are a LENR experimenter, keep a lookout for abnormal neurological symptoms related to your LENR experiments.