Are there dangers in breathing the fumes from stored telephone poles ?

There are far more dangers associated with the chemicals emitted from new car interiors, new carpet and furniture in homes, new clothing, and pet dander.

I would also assume that breathing the odors generated within senior housing facilities would pose significantly higher health problems since, statistically, the residents die at an alarming rate compared to the general population.

Some wood preservatives are toxic among them creosote and the arsenic group used as salts. The smell increasing on hot days could be natural tree resins melting and out gassing or the creosote and other hydrocarbon doing the same thing, both can be harmful in concentrated and prolonged exposure research poly aromatic hydrocarbons for more information. However the poles in the yard may not be the only source of concern or indeed odor from an electrical utility's storage yard some of the older transformers contain some nasty compounds as coolants too.

No. the ratio of the chemical to air is minute. It's just your nose that pick out the odd molecule that you fear.

Dr Antony