Cultivators have been chopping down swaths of woodland to make space for more natural product trees in the condition of Michoacan, the world's avocado capital.
"The sniffling doesn't stop when they are treating," said Carmona, a stocky 36-year-old mother of two who works at a little supermarket in Jujucato, a town in the heart of avocado land.
In the 15 years that Salvador Sales has been educating in Jujucato, he has seen his understudies catch increasingly breathing and stomach issues.
"We trust this is brought about by the items used to shower the avocado plantations," said Sales, who trusts that the wind blows the compound vapor into the homes of his understudies.
Around 40 percent of the world's avocados are developed in Mexico, and the majority of those originate from the range around Jujucato and Lake Zirahuen.
Avocados involve nearly 137,000 hectares (340,000 sections of land) of land in Michoacan, as per state government figures.
Half of those plantations were planted in timberlands after the land was purchased through questionable legitimate means, as per Jaime Navia, leader of a rustic innovation NGO called Gira.
Deforestation is developing at a pace of 2.5 for each penny for each year, as indicated by Gira.
Mild climate in the district takes into account year-round development of avocado, a natural product that started in Mexico and is stacked with vitamins, proteins and solid fats.
While there is a solid nearby request, generation has taken off alongside the avocado's regularly developing worldwide offer, and woodlands have paid the cost.
Specialists caution that the chemicals utilized as a part of mountain plantations might spill down into ground water, streams, waterways and lakes, and hence bringing on diseases among the populace.
Alberto Gomez Tagle, a specialist on nature in the Lake Zirahuen area, which incorporates Jujucato, said numerous groups that depend on the lake water may as of now be experiencing the impacts of concoction spillover.
One lakeside town approached specialists for help when occupants started to experience the ill effects of liver and kidney issues that did not exist until "the avocado plantations extended and a wide range of pesticides were utilized," Gomez Tagle said.
Authorities and a few makers are endeavoring to end the development of plantations in woodlands.
Since August, powers have recouped 100 hectares of land and confined many individuals working in fields that had attacked backwoods.
A mark is being made for avocados sold in stores with the goal that buyers can distinguish those from plantations that don't hurt the earth.
Avocados had their first "blast" in the 1970s, however generation truly took off in an uncontrolled route into the woods in 2000, said Navia of Gira.
Outside interest for avocados have become reliably in the previous decade, particularly from the United States - Mexico's greatest exchange accomplice - and nations like Japan, as per central government figures.
In 2003, avocado fares came to about $60million (£48million), an assume that shot up to $1.5billion (£1.2billion) by 2015. Avocado deals to Japan went from $40million (£32million) to $106million (£85million) in a similar day and age.
Michoacan has been known as of late for grisly conflicts between opponent medication groups, which have additionally moved into the avocado exchange, authorities said.
A portion of the avocado agriculturists that attacked the backwoods are 'sorted out wrongdoing' individuals, a state government official told AFP, focusing on that the powers had recovered some of that land.
There are even avocados developed as high as 2,600 meters (8,500 feet) above ocean level, "despite the fact that they aren't that beneficial," said Navia.
One hectare of avocados creates by and large around $5,400 (£4,300) every year.
Mexican avocado packers as of late went on strike for a couple days to dissent the low pay they were getting this season, which ranges from between $1.8 (£1.45) and $2.6 (£2.08) per kilo.
The brief strike brought about a worldwide avocado value climb.