Q.Hallucinogenic effect of spider plants on cats
You state that NDSU extension says the following. Do you have a reference and link for this?
Spider Plants And Cats: Why Are Cats Eating Spider Plant Leaves And Can It Be Harmful?
But, according to the North Dakota State University Extension Service, studies have found that this plant does, indeed, give off a mild hallucinogenic effect to felines…
PS
Read more at Gardening Know How: Spider Plants And Cats: Why Are Cats Eating Spider Plant Leaves And Can It Be Harmful? https://www.gardeningknowhow.com/houseplants/spider-plant/spider-plants-cats.htm

These are the cite sources: http://www.ext.nodak.edu/extnews/hortiscope/pests/cat.htm
http://www.ext.nodak.edu/extnews/hortiscope/houseplnts/spider.htm
http://www.news.wisc.edu/16820