The subtle smell and taste is not an opening of occult knowledge and powers, but simply an opening of the inner consciousness. The subtle smell coming from a person is due to something in the person's vital-physical. That something may not be prominent at all times. When it is, the smell is there. . . something may be of different kinds in different cases and one cannot give a rule that it is this or that. What has the dirtiest smell is sex.
The forces are conscious. There are besides individualised beings who represent the forces or use them. The wall between consciousness and force, impersonality and personality becomes much thinner when one goes behind the veil of matter. If one looks at a working from the side of impersonal force one sees a force or energy at work acting for a purpose or with a result, if one looks from the side of being one sees a being possessing, guiding and using or else representative of and used by a conscious force as its instruments of specialised action and expression. You speak of the wave, but in modern science it has been found that if you look at the movement of energy, it appears on one side to be a wave and act as a wave, on the other as a mass of particles and to act as a mass of particles each acting in its own way. It is somewhat the same principle here.