The dojo must be carefully cleaned and a well ventilated space is preferable. Even if they improve technically, their technique will remain a technique prisoner of technique. Let us not forget that aikido is not only the way of mind-body unity but mostly the way of unity. If the spirit is stopped in its progression, then everything stops. A spirit who rejects others, a spirit who doesn't know how to accept others, a spirit to whom it is enough that only it progresses, a spirit who brings everything to the narrow realm of the ego cannot open itself to a state of unity with the universe.
Practice exists, thus progress is possible.
To help a less advanced practitioner requires much patience and love. To understand the causes hindering this less advanced practitionner, it is necessary to constantly push our own research forward. In the world of bujutsu where we often focus on the efficiency and power of the technique, more important is the strength allowing to go beyond this stage. The practice of aikido cannot be narrowed to anting to become strong in the sense of injuring the partner or refusing to lose. In aikido, power is a consequence of applying the principal of the universe.